Machine for filling molds



Oct. 27, 1925.

K E. O( BEARDSLEY ET AL MACHINE FOR FILLING MOLDS 3 Sheets-Sheet 2 FiledApxfl 25 Oct. 27u 1925 E. O. BEARDSLEY ET AL MACHINE FOR FILLING MOLDSVy Filed April 25. 1923 5 Sheets-Sheet .Patented oa. 27, 1925.

UNiTsoysTfArEs PATENT oFFIcE.

ELMER O. BEARDSLEY AND WALTER PIPER, OF CHICAGO, ILLINOIS, ASSIGINORS TTHE IBEARDSLEY & PIPER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION 0FImmers.

:erlernten ron FILLING MoLDs.

Application tiled April 25, 1923. Serial No. 634,445.

To all whom t may concern:

Beit known that We, Emma O. BEARDS- LEY and WALTER F'. Pirna, bothcitizens of the United States, f od residents of Chicago, in the countyof Cook and State of Illinois, have invented certain new and usefulI'mprovements in Machines for Filling Molds, of which the following is afull, clear, and exact description.

The invention relates to machines for lilling molds and more.particularly to that type in which sand isv projected at high speed intothe flasks.

One 'object of the invention is to provide improved means for supportingthe sand projector or slinger, so lthat it can be easily moved overflasks and particularly in those instances where the longitudinalmovement of the projectorl necessary to project sand into all portionsof the mold, is comparatively short. *Another object of the invention isto pro-ride improved mechanism cooperatively arranged With the movableprojector for carrying {iasks to and from the projector. y@ther objectswill appear-.from the following description:

The invention consists in the several noyel features hereinafter setforth and more particularly deiincd by claims at the conclusion hereof.l

lu the drawings Fig. 1 is a side elevation of a machine embodying theinvention,

parte lacing` shown irl-section. Fig. 2 is a section taken on line 2-2of .Fig l. Fig.

' 3 is a longitudinal section through the prof jector. and thesupporting `arm. or j ib. Fig. `4 is a transverse section taken on lineof Fig; A1. .Fig 5l is a transverseV section through the projector. Fig.`Gis aplau.

Figure 7 is a' detail View. partly in 'section.

of the drive mechanism for the sand pulley belt.

rlhe machine illustratedfcomprises u hollow supporting column 1t) on theupper end r of which is pivotally mounted a supportingY bracket 11. Thisbreekt-itv comprises an upper section 12 and a lower section 13 betweenwhich are confined suitable ball-bear ings'14 formingan anti-frictionbearing for supporting the bracket 11, so that it can be freely rotatedin a horizontal plane. Sections 12 and 13 are secured together by bolts15 and arev formed so as toenclose 'bearings 1.4 and the upper end ofcolumn l0 and to retain the bracket on thecolumn. The base 1601i columnl0 is fixedly secured to the molding room lioor by bolts 17.

The machine comprises a jib or arm 36, a sand projector including acasing or stator 38 and a rotor 39 provided with a combined projectorand shear-blade 40, a shaft 41,` to which the rotor is secured, atubular member 37throughwhi`chshaft 41 extends,.and an electricl motor42, the casing ot' which is fixed to arm 36 and to the rotor of which(not shown) the projector 41 is secured.

An endless belt 46 is adapted to convey sand received from an overheadstationary chute` 44 and to deliver it to the projector 4casinol 38 andto the rotor 39. This belt 46 is carried by a drive-pulley 47 adjacentthe electric-motor and an idler pulley48 adjacent the projector casing.Both of these pul leys are mounted `-to move with arm 36. The idlerpulley 48 1s supported by bearings 48 which are fixed to a yoke 38 whichrigidly connects the casing 38 and tubular armrneinber 37. Drive-pulley47 is mounted on a stationary shaft 58 which is supported by a bracket59 and a gearcase 57. both of Whichare tixedly secured to the sides of ahousing-49. The latteris lixedly secured to member 37 of arm' 36 and tothe casing of '85 motor 42, so that the projector, motor ,and

'sand-feeding belt may be shifted together, as hereinafter more fullys'etforth. 'Pulley r47. which drives the sand-feeding belt 46,

is drijven by gearing comprising a pinion 51 in housing 49 and fixed toshaft 4l; a gear 52 on atransverse shaft 53,; al pinion 54 on vshaft 53;an idler 55 meshing with pinion V54 and with 'a gear 56 fixed vto thehub of pulley 47. Gear-case 57 encloses pinion 54 and gears 5,5 and 56.An upwardly flared chute 60 is supported over the inner end of belt 46to direct sand from chute 44 .onto belt 46 in all Ipositions ofarms'36.4 Chute '60 is secured to guidefbars 70 which are disposed overbelt 46 and are supported by rods 73 which are supported by a clamp 71on member 37 and a. bracket 72, whichv is fired to the casing of motor42. 'The central portion ofthelower reach-of belt 46 is supported by anidler pulley '46 so that,

the belt will clear the. suppprting bracket loa ' el bracket 46a. whichis iixedly secured to -nbularmember 37 of arm 36. Handles 6l provided onthe projector casing 38 uoreby the operator may shift the arm or jlbT15, tovether with all ot the parts earfait rieti there y. 'l heconnectlon between arm 36 comprises ahanger'62 in which tubular member37 and arm 36 are rigidly clamped; a stud 64,

having its airis parallel with lthe axis ot the Aprojector--shattadisposed above arm 36 and extending through han er 62 so that the hangerand said arm Will be pivotally sustained from said stud; a bracket 65rigid with stud 64, bowed around arm 36 and ex tc ,ding under housingl49; two pairs ot parallel suspension links 66, the upper end et eachlink being pivotally sustained by a bolt 6T which is supported in astandard 68 rising from and rigidly secured to the supporting bracket'l17 which is pivoted to swing horizontally on the main supportingcolumn lO; and eross-rods 69 carried by the lower ends of said pairs otlinks respectively and extending through lugs 65 on bracket so thatbracket 65 will be movably sustained by links 66. A roller 80 is mountedon housing 49 and is adapted to ride in an arcuate groove 8l :termed atone end ot bracket 65. This roller and groove connecj tion permits thearm to be swung;f about the asis ot stud 64 and prevents excessive'strains on and breakage of said stud from which the arm and partecarried thereby are suspended.

Normally, arm 36 is suspended from icket 65 and stud 64, so that theprojector .li be positioned rto cause the sand to be `v'ejectedvertically downward. ln iilling ifa with wide retaining bars` it isdesirailc to slightly angle the line of delivery to A 'eet the wads andpack sand under the han or undercut spaces. The suspension l nger GQpermits the operator to rock arm around the horizontal axis of stud 64so that the projector casing, motor 4Q. ho f ng 49, belt 4G and chute60, all of nich are cooperatively mounted on said arm. will be 'shiftedin unison suciently to vary the line ot delivery ot the sand to causo itto he proiected under the retaining bars in the flask. This rocking ofthe projector and its associated parts is accomplished by grasping; andshitting the handles 6l. llVhen the handles are released., the arm willmove by gravity 'to its normal position under stud 6l.. so that the Wadaof sand will be dis` charged vertically, except. when the arm is rockedlaterally by the operator. The roller 8f) in groove Si, preventsexcessive strains on .longitudinal sides.

the stud (i4. I n

The projector' supporting-arm 36, being supported by the horizontallyrotatable fh is parallel with the axis ot arm S6` bracket ll, can beswung horizontally. around the axis of colmn 10, Yso the opel ator canshift the projector laterally with'- out varying the angle of delivery.ot the sand when desired and to project sand into ditterent portionslengthwise of the flask, by grasping handle 6l and swingingY the arm,bracket 65, suspension link G6 and bracket ll horizontally around columnl0.

In filling iasks in which the crosswiso dimensions are comparativelyshort. it has been 'found possible to dispense with av jointed pair othorizontally swinging arms for 'supporting the projector. b v providing'suspension means. such as links 66. which permit. the projectorcarrying' arm 3G to be shiftedlongitudinally. In filling thc flasks. theoperator, by means ot handle 6l, can move the arm inwardly or outwardly'to work the projector over and crossvvise of the flask to till allportions ot the fiask This suspension linkage beine' composed otparallel nairs of links, permits the proiector to be shifted crosswiseof the flask without substantial variations in the angle of deliverv ofthe sand. A further characteristic of this suspension linkao'e is thatthe projector, when it is normally positioned centrally over the a'sk.will. after it has been shifted radially inwardly1 or outwardly,automaticallv move back hv gravity to its normal central position. thnsrelieving the operator ot the necessity of retractiner the proiector tosaid position.

The mechanism thus tar described. exempliiies a structure in which thedriven projector is supported bv an arm which is suo? ported so it mavbe moved latcrallv lenefth wise ot the iia'sk and shifted lonfitndinallvcrosswise ot the iiask. while the sand is beine" projected at asiibstantiallv non-variont ano-le ot deliverv: also a structure of that.character in which provision is made for slifrhtlv varvinof Vthe analeof deliverv when sand is to he projected in nndere'nt places orcavities; also a. construction .in 'which a sinole arm-carrvina theproieetor. driving mechanism for the. projector and driven sand-eedingmechanism are all mounted on an arm which is pivotallv movable in ahorizontal. pla-ne and bodily movable lonnitudinallv7 to permit thenecessary movement of the projector to till all portions of the flasks.

in filling fihsks by the nroiectorhereinbetore described. it isdesirableV that they be delivered so that the flasks Will beapproximately' centralh7V disposed below the proiector while the latteris `oosition.v so that in lillina the {iask it will be necessary to movethe projector only from a point above the center of the flask to its lltis also otherwise advantageous in a sand proiector which is mounted ona' stationary column to have the flasks deliver at a substantiallyuniform point beneath 'the projector and to facilitato 'the bringinglol' the flasks into receivingr position and their removal after theyhave been tilled. For these purposes, a turn-v table 90, preie'ablv madeot' a sheet ot' boiler-plate. is mounted to rotate concentrically aroundthe axis ot column 10. A. ball-bearing' 91 supports the inner portion ofthis table and a series ot' rollers 92 Amounted in ln'acliets 955respectively support the outer margin oi the turn-table. A stationaryangle iron ring 94 is fixed to the `floor and an angle iron ring( 95 isfixed to the underside oi" turn-table 90. so that the vertical flangesof these rings will lap one another to exclude sand from the spacehetween the turn-table and the floor. Flask `carriers 96 oit anysuitable construction and in desired number are secured to the turn-ytable and are rotatable therewith, so that mounted ona bracket lOl fixedto column l0; arpinion 102 on 'the motor shaft; a gear 103 meshingr withsaid pinion and fixed to :t shaft 104 also mounted in said bracket; abevel-pinion 105 fixed to shaft 104 and driven by tcrear `103; abevel-gear 106 meshing `with pinion 105 and fixed to a 'vertical' shaft107 Whicn is also mounted in bracket 101: a pinion 10S fixed to thelower end of shaft 107; and an internally toothed gearrinp' 109., whichis fixed to the upper tace of turn-table 90. A housing' 110 enclosesthis gearing and motor and is also extended to cover the rear-ring; 109to er-tclude sand therefrom. This mechanism eX- emplifies an electricmotor and reducing:r gearing for constantly driving' the turntable 00:tor feeding; flasks to the projector.

The operation ot the proicctor, its driving' mechanism and thesand-ttwding;l belt, is substantially the same as act 'forth in LettersPatent No. 1.408.403 granted to us March 7, 1922.

lin operation. the operator moves the projector laterally andlongitudinally ot the flask the pivotal connection between bracket lland column l0 permitting' this to be donc. The projector is-movableradiali),y inward or outward by the operatfn'. the suspension linkagebetween brackets ll and permitting this'to be done. i When necessary,the

ltive relation.

projector vcan .he rocked' laterally to slightly var v its angle oitdelivery. the hzing'er 62 and stud Gat permitting' that to bc done. lnall ot those movements. thc motor ft2. projector and sand-feeding' beltremain in cooperalVhcn the turn-table 00 is in operation, one operatorvfill be stationed adiacent` the projector and others will place emptyflasks on the carriers 00 approachiim' the 'projector and will removethe .filled flasks from the carriers. lhe operator at the projector Willmanipulate. handle (Si to move the projector longitudinally andtranf-:vcrselv of the flask, to till all portions thereof. while theflasks arc moving' with the turn-table 90. The projector-supportina arm30 and the turn-table are coaxial, so that the operator may easily movethe projector back and tortli lengthwise of the mold. Arm 36, beine'horizontally movable around an axis coincident with the axis of theturn-table` can be shifted throughout a 'full circle` so that the pro-'jector may be positioned at any desired point where it is desired tolill the flasks. Furthermore, this arrangen'ient permits the. operator-to keep the project-o1' over the flask as long asilnay bc necessary toproperly fill it.-

The invention exemplifies a molding machine ot the sand-projector type.in which a single projcoter-carrying arm is movable pivotally andlonnitm'limillv'so that. in some instances. a pair of pivotallvconnected arms maybe dispensed with. Also a structure ot this characterin which the single arm is carried by suspension links which permitlongitudinal shitt ot" the arm and which are automatically restored bygravit-y to a central position.T The invention also exemplifies amachine ot this type in which the projector carrying' crm swingsconcentrically 'with the flrnks on a turn-table. The machine. as awhole' mal-tes it possible to till. flasks by the m'oiectinf;method withgreat facility and with a low labor cost.

The invention is not to be understood as restricted to the detailsforth. since these may be modified Within the scope of the appendedclaims. without departing' from the spirit :md ,scope ot the invention.

Having thus described the invention, 'what we claim as new and desire tosecure by Letters Patent, is: i l. ln a molding' machine. thecombination of an arm,l a sand projector mounted on and movable withsaid arm, a motor for driving the projection means tor conveying-sand tothe projector, and 'a link-suspension tor the arm pivoted to permltlongitudinal moven'icnt tliorco'l",

il?. ln a moldingmachine. the cf lnhination ot an arm, a sand 'rojectormounted the arm comprising substantially parallel links pivctepl topermit longitudinal lmovement ot the arm. A

3. In a molding machine` thefcombination of an arm, a sand projectormounted on and movable Iwith said arm, a motor ior driving theprojector7 means for conveving sand to the projector, and a suspensiontor the l arm comprising vertically extending links pivotedv to permitlongitudinal movement of the arm.

4. In a molding machine, the combination of an arm, a sand projectormounted on and movable'with -said arm, a motor for driving theprojectonmeans tor conveying sand to the projector, and a suspension forthe arm to permit longitudinal movement thereof, comprising verticallinks pivoted to swing across their Vertical centers so the arm Willreturn by gravity to its normal position.

5. In a molding machine, the combination of anarm, a pivotal connectionfor permitting thel arm to swing horizontally, a sand projector mountedon the distal end of and movable with said arm, a motor for driving theprojector,I means for feeding' sand to the projector and alink-suspension for the arm pivoted to permit longitudinal movementthereof. l

6. In a molding. machine, the combinat-ion of an arm, apivotal--connection fon permitting the arm to swing horizontally, a

sand projector mounted on the distal endl of and movable with said arm,a motor for driving the projector, means for feeding sand to theprojector, and a susnensionyi'or the arm comprising substantiallyparallel links pivoted' to permit bodily longitudinal movement of thearm.

7. In a molding machine, the cmbination ot an arm,- a pivotal connect onfor permitting the arm to swing horizontally, a

sand projector mounted on the distal end of and movable with said arm, amotor for drlvmg the projector, means for feeding -sand to theprojector, and a suspension for the arm comprising vertically extendinglinks pivoted to permit bodily longitudinal movement of the arm.

8. In a molding machine, the combination of an arm, a pivotal connectiontor permitting the arm to swing horizontally, a sand projector mountedon the distal end of and movable with said arm` a motor for driving theprojector` means for feeding;l sand to the projector, and a suspensionfor the arm to permit bodily longitudinal movement thereof compris-ingvertical links pivoted to swing across their vertical centers so the armwill return b v gravity to its normal position.

9. In a molding` machine, the combination of an arm, a sandjn'ojcctor'mounted on the distal end of and movable with said arm, amotor for driving" tlie' projector, mounted on the. other' end otsaidarm. means for feeding sand tothe projector also mounted on said armandalink suspension for tl.n arm pivoted. to pei-'mit hodilvif'zn gitut 'n'l movement thereof.

10. lua moldingmachine,-the conv-bination of an arm, a sand projectormounted on the distal end of and movable with said arm, a motorfor'drivin'g the projector, mounted on thel other -end ojf said arm,means for feeding sand to the projector also mounted on said arm, and asuspension tor the arm comprising substantially parallel links pivotedto permit bodily longitudinal movement of the arm. i

.11. In a molding machine, the combina-v n mounted on the other end of-said arm,

means for feeding sand to the projector also mounted on. said arm, and alink suspension for the arm to permit bodily longitudinal movementthereof, comprising vertically extending links.

12. In a molding machine, the combina tion of an arm, a sand projectormounted on the distal end of and movable with. vsaid arm,.a motor fordriving the projector' mounted on the other end of said arm, means forfeeding sand tothe projector also mounted on said arm. and a suspensionfor the arm to permit bodily longitudinal mo vement' thereof comprisingvertical links piv oted to swing across their vertical centers so thearm will return by gravity to its normal position. f

13. In a molding machine, the combination of a fixed support, an arm, asand projector mounted on said arm, a pivotal con nection on said fixedsupportl to permit the arm to swing horizontally, a motor for drivingthe projector mounted on the arm, means for feeding sand longitudinallyot the arm to the projector, driven by the motor, and a link suspensionbetween the piv otal connection and thearm pivoted to permit bodilylongitudinal movement thereof.

14. In a molding machine, the combination of a fixed support, an arm, asand projector mounted on said arm, a pivotal connection on .of a fixedsupport, an arm, a sand projector Miti sand longitudinally of the arm tothe proje`c,

tor,.driven'by the motor, and a sus nsion between the pivotal connectionand t e .arm to permit .bodily longitudinal movement thereof, comprisingvertically extending l 16. a molding machine, the combination ot a iixedsupport, an arm, a sand-projector mounted on said arm, a pivotalconnection on said fixed support to permit the arm to swinghorizontally, a motor for driving the projector mounted on the arm,means for feeding sand longitudinally of the arm to the projector,driven by the motor, and a link sus ension between the pivotalconnection anY the arm to permit bodily longitudinal movement thereof,comprising vertical li ks pivoted to swing across their vertical cen rsso the arm will return by gravity to its normal position.

17, In a molding machine, the combination of an arm, a sand-projectormounted on said arm, a pivotal connection for the arm susped the arm soit can be rocked laterally, a link suspension for supporting the arm topermit it to be moved longitudinally, a motor on the arm, for drivingthe projector, and means mounted on the arm and driven hysaid motor, forfeeding sand to the projector. l

18. In a molding machine, the combination of an arm, a sand projectormounted on said arm, a pivotal connection for' the arm to permit it toswing horizontally, means to sus-y pend the arm so it can be rockedlaterally, a suspension for supporting the arm to permit it to be movedlongitudinally, a motor on the arm, for driving the projector, andmeans'mounted on 'the arm and driven by 'said motor, for feeding sand tothe projecf tor.

19. In a molding machine, the combination of an arm, a sand projectormounted on said arm, ai pivotal connection for the arm to permit it toswing horizontally, means to suspend the arm so it can be rockedlaterally, a suspension for supporting the arm to permit it to be movedlongitudinally comprising substantially parallel links, a motor on thearm, for driving the projector, and means mounted on 'the arm and drivenby said motor, for feeding sand to the projector.

E50. In ,a molding machine, the combina tion of an arm, a sand projectormounted on said arm, a pivotal connection for the arm to permit it toswing horizontally, means to sus pend the arm so it can be rockedlaterally, a link suspension for supporting the arm to permit it to bemoved longitudinally comprising vertically extending links, a motor Vonthe arm, for driving' the projector, and

means mounted on the arm and driven by said motor, ior feeding sand tothe projector.

21. In a molding machine, the combination of an arm, a sand projectormounted on said arm, a pivotal connection for the arm Ato'permit it toswing horizontally. means to suspend the arm so it can be rockedlaterally, a link suspension t'or supporting the arm to permit it to bemoved longitudinally, a motor on the arm, for driving the projector, andmeans mounted on the arm and driven by said motor, for feeding sand tothe projector, comprising Vvertical links pivoted to swing across theirvertical centersv so the arm will return by gravity to its normalposition.

22.'In a molding machine, the combination of a fixed column, an armpivotod on and to swinguaround said oolumn, a sand projecv tor mountedon the distal end of said arm` a motor on the arm, for driving theprojector, means to feed sand to the projector, and a flask-carryingturn-table mounted to rotate around said column on an axis substantiallycoincident With the axis around which the arm swings.

:if 23. In4 a molding machine, the combinato permit it to'swinghorizontallyeans to tion-off aiixed column, an arm pivoted on and toswing around saidy column, a projector mounted on thedistal end of saidarm, means to permit longitudinal movement of the arm,a motor on thearm, for driving the projector, means to leed sand to the projectormounted on the arm, and a flask-carrying turn-table mounted to rotatearound said column on an axis substantially coincident With the axisaround which the arm swings.

24.-. In a molding machine, the combination of a ii 'ed column, an armpivoted on and to around said column, a projector mounted on the distalend of said. arm, a lllink-suspension for said arm to permit it to beshifted longitudinally, a motor on the arm for driving the projector,means to feed sand to the projector, and a iiask.- carrying turn-tablemounted to rotate around said column on an axis substantially coincidentwith the axis around which the arm swings.

25. In a molding machine, the combination of a fixed column, an armpivoted on and to swing around said column, a sandprojector mounted onthe'` distal end of said arm, :means to permit the arm to be shiftedlongitudinally and rocked laterally, a motor on the arm for drivingtheprojector, means projector mounted on the distal end of Said :ii-1n,afrrnotor'on the arm for driving the projector, means to teed eend tothe projector, a fiasl -oarrying turn-table rotatable around thecolumnon un axis substantially Jo'ivnfcidf'nt with the axis around whichthe urn; swings, and mechanism for driving the turn-table.

- 2i'.` In :1, rnolding machine, the combination of a fixed column. onarm pivoted on und to swing-around said column, a sandprojertor mountedon the distal end of said arm. means to permit longitudinal movement ofthe arm, n motor on the arm for driving the projector', menue to l'ecdsand to the projector. o finali-carrying turn-table rotatable around thecolumn' on on axis Substantially coincident witlrthe axis around whichthe arm swings, and mechanism for driving the turn-table.

28. ln a molding machine, the combina tion of a fixed column, :in armpivoted on and to swing around seid column, e sundprojector mounted onthe distal end of said arm, o link-suspension lor the arm, u motor onthe arm for driving the projector, means to feed sand to the projector,a insloearryingttii'ntehle rotatable around the column, on` an axissubstantially coincident with the axis around which the arm swings, undmechanism for driving the turn-table.

29. En a molding machine, the combination or' a xedcolumn, an armpivoted on and to swing around said column, srsndprojector mounted onthe distal end of said arm, ineansto permit 'the ann to be movedlongitudinally und rocked laterally, ,motor on the arm for driving;n theprojector, means to 'feed sand to the projector, u flask-cmry-` ingturntable rotatable around the column on an axis substantiallycoincident with Vthe axisf around which the arm swings, and mechanismlor driving the turn-table.

p30. ln a moldingr machine. the combina-` tion ot n sund-projector, uhorizontally Swinging arm, to the free end of which the projector issecured, means for feeding sand to the projector, n connection forpivotally supporting the urn'i to permit the projector'.

supporting the firm to permit the projector' to he shifted to inclinethe angle of delivery when desired, and a studand-groove to A`guide thearm.

Signed at Chicago, Illinois, this 17th day of April, 1923.

ELMER O. BEARDSLEY. WALTER F. PIPER.

